| Message ID | 20220131170654.62381-1-vladimir.murzin@arm.com (mailing list archive) |
|---|---|
| Headers | show |
| Series | arm64: Support of PAuth QARMA3 architected algorithm | expand |
On 1/31/22 5:06 PM, Vladimir Murzin wrote: > QARMA3 is relaxed version of the QARMA5 algorithm which expected to > reduce the latency of calculation while still delivering a suitable > level of security. > > Feature advertised via a new ID fields in ID_AA64ISAR2_EL1 [1], so we > need to teach the kernel to identify this. > > [1] https://developer.arm.com/documentation/ddi0601/2021-12/AArch64-Registers/ID-AA64ISAR2-EL1--AArch64-Instruction-Set-Attribute-Register-2?lang=en > > > Changelog: > > v1 -> v2 > - Removed unintended whitespace change in sysreg.h > - FTR_ALIAS_OPTION_LEN now accounts null terminator > - Extract only APA3 bits from ID_AA64ISAR2_APA3_SHIFT (in ^^^^^^^^^^^^^^^^^^^^^^^ should be read as ID_AA64ISAR2 > contrast to id_aa64isar1_el1 where both APA and API bits > are extracted) in asm_pointer_auth.h > > Thanks! > > Vladimir Murzin (4): > arm64: cpufeature: Account min_field_value when cheking secondaries > for PAuth > arm64: cpufeature: Warn if mutually exclusive PAuth algorithms > detected > arm64: cpufeature: Mark existing PAuth architected algorithm as QARMA5 > arm64: Add support of PAuth QARMA3 architected algorithm > > arch/arm64/include/asm/asm_pointer_auth.h | 3 ++ > arch/arm64/include/asm/cpufeature.h | 1 + > arch/arm64/include/asm/kvm_hyp.h | 1 + > arch/arm64/include/asm/sysreg.h | 12 +++++ > arch/arm64/kernel/cpufeature.c | 63 ++++++++++++++++++++++---- > arch/arm64/kernel/idreg-override.c | 16 ++++++- > arch/arm64/kvm/arm.c | 1 + > arch/arm64/kvm/hyp/include/nvhe/fixed_config.h | 5 ++ > arch/arm64/kvm/hyp/nvhe/sys_regs.c | 14 ++++++ > arch/arm64/kvm/sys_regs.c | 5 ++ > arch/arm64/tools/cpucaps | 6 ++- > 11 files changed, 114 insertions(+), 13 deletions(-) >
On Mon, 31 Jan 2022 17:06:50 +0000, Vladimir Murzin <vladimir.murzin@arm.com> wrote: > > QARMA3 is relaxed version of the QARMA5 algorithm which expected to > reduce the latency of calculation while still delivering a suitable > level of security. > > Feature advertised via a new ID fields in ID_AA64ISAR2_EL1 [1], so we > need to teach the kernel to identify this. > > [1] https://developer.arm.com/documentation/ddi0601/2021-12/AArch64-Registers/ID-AA64ISAR2-EL1--AArch64-Instruction-Set-Attribute-Register-2?lang=en > > > Changelog: > > v1 -> v2 > - Removed unintended whitespace change in sysreg.h > - FTR_ALIAS_OPTION_LEN now accounts null terminator > - Extract only APA3 bits from ID_AA64ISAR2_APA3_SHIFT (in > contrast to id_aa64isar1_el1 where both APA and API bits > are extracted) in asm_pointer_auth.h > > Thanks! > > Vladimir Murzin (4): > arm64: cpufeature: Account min_field_value when cheking secondaries > for PAuth > arm64: cpufeature: Warn if mutually exclusive PAuth algorithms > detected > arm64: cpufeature: Mark existing PAuth architected algorithm as QARMA5 > arm64: Add support of PAuth QARMA3 architected algorithm For the series: Reviewed-by: Marc Zyngier <maz@kernel.org> M.
QARMA3 is relaxed version of the QARMA5 algorithm which expected to reduce the latency of calculation while still delivering a suitable level of security. Feature advertised via a new ID fields in ID_AA64ISAR2_EL1 [1], so we need to teach the kernel to identify this. [1] https://developer.arm.com/documentation/ddi0601/2021-12/AArch64-Registers/ID-AA64ISAR2-EL1--AArch64-Instruction-Set-Attribute-Register-2?lang=en Changelog: v1 -> v2 - Removed unintended whitespace change in sysreg.h - FTR_ALIAS_OPTION_LEN now accounts null terminator - Extract only APA3 bits from ID_AA64ISAR2_APA3_SHIFT (in contrast to id_aa64isar1_el1 where both APA and API bits are extracted) in asm_pointer_auth.h Thanks! Vladimir Murzin (4): arm64: cpufeature: Account min_field_value when cheking secondaries for PAuth arm64: cpufeature: Warn if mutually exclusive PAuth algorithms detected arm64: cpufeature: Mark existing PAuth architected algorithm as QARMA5 arm64: Add support of PAuth QARMA3 architected algorithm arch/arm64/include/asm/asm_pointer_auth.h | 3 ++ arch/arm64/include/asm/cpufeature.h | 1 + arch/arm64/include/asm/kvm_hyp.h | 1 + arch/arm64/include/asm/sysreg.h | 12 +++++ arch/arm64/kernel/cpufeature.c | 63 ++++++++++++++++++++++---- arch/arm64/kernel/idreg-override.c | 16 ++++++- arch/arm64/kvm/arm.c | 1 + arch/arm64/kvm/hyp/include/nvhe/fixed_config.h | 5 ++ arch/arm64/kvm/hyp/nvhe/sys_regs.c | 14 ++++++ arch/arm64/kvm/sys_regs.c | 5 ++ arch/arm64/tools/cpucaps | 6 ++- 11 files changed, 114 insertions(+), 13 deletions(-)